Abstract: The screened criteria of diverhity,repretesenta-tiveness,rarity,naturalness,suitability of area and both intrin-sic fragility and threat of hurman interference were expounded,compared and analyzed in accordance with the status of naturereserves in China,The reldtively systematic and practical criteria, standards and method of ecological evaluation for naturereserves were established .It can be used in quantitative evalu-ation of the nature reserves in the natural ecosystems .